GameDevMarket.net
Great quality (but budget priced) 2D and 3D artwork you can use in your own games.
Game Development Crash Course
19 lessons and an hour of video get you started fast and free with Corona SDK game dev!
Mobile Game Dev Videos
8+ hours of video tutorials - see how to make games with Corona SDK!
Outlaw IDE
The #1 IDE for Corona SDK game and biz apps makes development even faster (free version available).
Pathfinding Tutorial
Use Corona SDK and the free Jumper library to do A* pathfinding in your games - over 60 minutes of video + sample code!